Heterocyclic Compounds
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ChemInform Abstract: Diastereo- and Enantioselective Synthesis of trans-3-Phenyl- and trans- 3-Styryl-2-azetidinones via Zinc Ester Enolates and Imines.
First published: April 6, 1993
Abstract
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ChemInform Abstract
Zn enolates of phenyl- and trans-styryl-acetic acid methyl ester (I) react with excellent diastereoselectivity and good enantioselectivity ( 64 to 91.5% e.e.) with imines such as (II) and (V) to give the title compounds, e.g. (III) and (V). The corresponding Li enolates react with much lower selectivity and yields.
